# html-has-lang elements must have the lang prop. This rule is largely superseded by the [`lang` rule](https://github.com/jsx-eslint/eslint-plugin-jsx-a11y/blob/HEAD/docs/rules/lang.md). ## Rule details This rule takes no arguments. ### Succeed ```jsx ``` ### Fail ```jsx ``` ## Accessibility guidelines - [WCAG 3.1.1](https://www.w3.org/WAI/WCAG21/Understanding/language-of-page) ### Resources - [axe-core, html-has-lang](https://dequeuniversity.com/rules/axe/3.2/html-has-lang) - [axe-core, html-lang-valid](https://dequeuniversity.com/rules/axe/3.2/html-lang-valid)